Apparatus for surfacing railway journal box wedges



July 5, 1932. A. L. PRENTICE ET AL APPARATUS FOR SURFACING RAILWAYJOURNAL BOX WEDGES Filed Feb. 12, 1929 2 Sheets-Sheet 1 y 1932- A. 1..PRENTICE ET AL 1,865,955

APPARATUS FOR SURFAGING RAILWAY JOURNAL BOX WEDGES Filed Feb. 12. 1929 2Sheets-Sheet 2 I-H E;

" P-FA 6M C 0% v Arroz lv y z Patented July 5, 1932' UNITED: STATES, JPATENT oF FIcE ALLAN. LEONARD rnEn'TIcE, or CLEVELAND HEI HTS, ann srnvnny eam nucxnr'r, or EAST CLEVELAND, oHIo, ANDCLYDE o. nrnnrnos'mmamronrs,

INDIANA V APPARATUS FOR ISUBFACINYGI RAr AY JOUR AL Box wEnejEs Application filed February 12, 1929. Serial N6.'-'339,s02;

This invention relatesto apparatus for surfacing railway journal boX'wedges and -1s particularly useful inresurfacing such wedges when theybecome worn from use.

The primary object of the invention IS the provision of means which aresimple in .con-

struction and operation for effectively and economically surfacing orresurfacing journal box wedges. I

The nature, objects and advantages will appear more clearly fromalconsidera'tion of the following description considered inconnectionwith theaccompanying' drawings which illustrate a preferred embodimentof the apparatus and in which 4 7 Fig. l is a side elevation of theapparatus employed; Y

I .F'g. 2 is a front view of theisame, certain Portions :Q pp ingstructure being omitted? r Fig; 3 is. a 'viewtak en: substantially asindi-' cated byth-e line 3 3 of Fig. 1; anda 2F ig. :4 isa' side viewofa ournal box, a por Z2 .tion of which is broken. away to showthejoulnalbearing and its backingor wedge member therein.

7 Referring nowtothe drawings it will be seen that the apparatus'of thepresent 1nven tion includes a suitable uprightzsupporting structure 5.and a work table .6; mounted for vertical movement at one side ofthestructure 5, the "said table .beinguvertically -1 adj ustable bymeans of the jack screw device 7 which may; bemanually operated by meansof the hand. wheel 8 (see Fig. 2); a,

' Asecond work table 9, is mounted for movehment toward or away from theupright supporting structure 5,.the said table 9 being car ried on thestable 6 and being provided with manuallyoperable means 10 ofawell knownconstruction for effecting its movement. .A third work table or'support11 is supported on'the table 9 and arranged for-transverse movement withrespect thereto. The movement, of this thirdtable 11 is carriedonautomatically by means of an operating connection'with the'motor 12whichisjmou'nted at the top of the supporting structure 5; The

operating connection includes. a sprocket and chain qouplling 13 (seeFig.8) between the angles to the-shafts 14515 andl8 supporting structure25,

shaft 2ladjacentto the work tables is proably mounted'in parallelrelation to the motor shaft 14:. The shaft l5lcarriesv adgear 16 1'motor shaaii and the shaft which is suit- I (see Fig.1) which mesheswith a gearl7'ses cured to a third-shaft 18, the shaft 18* also 55 beingmounted in parallel relation-to the motor shaft 14. 'Ashaft 19 is.arranged at'right 4 a worm wheel 20-which meshes with acooperating worm21secured to the shaft 18. The" and carries shaft 19 carries a gear22*;which, in turn, meshes witha gear-23 mounted'on the. shaft ismounted in asuitable open framework or box 25 carriedon the supportingstructure 5 and that the gear 23 is splined on the! shaft-24,

the latterv being provided with a suitable key way 26 which engagesthekey' 56 mentioned in one of the extendedhubs 27in order to permitlongitudinal movement .1 of the -shaftk24 are mounted on-thehubsQ'Z oneach side of the"gear.;23 and collars secured in the boxlikestructure25are mountedon the hubs and engage the bearings 54 in order to retain thegear 23 ini position to meshwith the gear 22. LAsupp rtor bearing''28ifor the shaft24" is mounted 1011 .thetable' 9 bymeans'ofthe'brack'et member or arm 29., A pair'ofunil versalljoints '30 areprovided in the shaft 'thru the -structure 25.. 1 Suitable bearingsi545v 24 between the bearing 28 and the box-like.

The end of the vided with 'a crank arm j31 which is opera. tivelyconnected witlrthe uppermost table."

"11 by means of the'connecting link 32. Thus when themotor 12 isin-operation the table 11 is reciprocated across thetables- 9. The motorshaft 14 carries asuitable grinding wheel 33 above thejtable ql ljsonwhich is adaptedto bemounted the wedged holder member 34; It should beobserved that the body of the holder member is;se cured to the table 11and that theisame is 7 provided with luprightj sides or-:fiajnges 35between which the wedge-Wltobe groundis mounted and secured;suitablegbolts '36 "be- .ing; provided; in -the side..members .3

. this purpose. the upper edges of the members are curved '---memb.erl0, the grooves being curved simi-,

It should also be noted that to conform to the contour of the desiredupper surface of the wedge \V;

At this point it should be observed that the motor 12 is' mounted on asupporting member 37 (see Fig. 3), the said member'37 in turn b eingmounted for vertical movement in the upper portion of the supportingstructure 5 which 'as is indicated in Fig. 3, takes the form of an openbox-like structure 38 which cooperates. with the. member 37 to guide thesame in its'vertical movement. The support 37 is provided with twodepending lugs 39 which are spaced apart a sufiicientdistance-to engagethecurved member or master radius 40. The member 40 is arcuateinformation and has the same curve as that desired to be produced on theupper surface of the wedge member WV. A roller 41 is mounted between thelugs 39 in positionltoride on the upper surface of the member 40 and apair'of rollers42 are secured to the lugs .39 at their lower extremitiesin position to be engaged by. and travel through the grooves .43 in theedges of the 'larly to the uppersurface of. the. member an. Thefmember40 is mounted on and secured vto a carrier member .44 which extendsthrough suitable apertures in the front and back :walls of thebox-like.- structure 38. Grooved guides 'or channel members 57 areprovided for supporting and guiding the {carrier 44 and wear gibs 58,are preferably arranged at the lower-flange of the guides :57. Aconnection member 45 is provided between themember 4A and the table. 9.The

"connection-45 is secured to the table 9'by --means of the bolt 46passing through a suitable verticallyfextendin'g slot-like. apertui'e inthe angled end 47 of themember 4:5. In considering theoperation .of theinvenxtion, referenceshould first be made .to F l in which we haveillustrated a railway-join"- --nalf box 48 adapted to house a journale9. The Weight of the railway-vehicle.istrans- '-mitted to the journal49. through .the top of the box 50, the bearing wedge or backing memberWand the bearing. brass 52. It should be understood .at this point thatthe upper surface-53 of the wedge is rounded ,or curved longitudinallyof the journal 49. I. in order to permit a rocking of the top of therboxon the Wedge 'whenthe wheels vof the vehicle encounter irregularities inthe track. 'It should also be observed that this form of,.construction'is substantially stand-.

ard .at the present time and that the present invention is directed toan apparatus for originally surfacing new wedges or resurfacing old orused wedges which have become flattened. from wear.

Whenitis' desired to surface such'a' wedge the same is placed lIltO thejig member. 34%

carried on the table 11 of the apparatus.

the wedge protrudes above such sic es, the

wedge is facing, does not protrude above the sides 35 the workman isimmediately advised that the wedge is worn beyond the practicalthickness and can no longer be restored. I

The operation of the surfacing or grinding apparatus itself is the samewhen treating new wedges or old wedges and is Carried on as follows:

A wedge is capable of reclamation or resurly by. means of the hand wheel8 to bring height for grinding. At this point themo- :tor'12-may bestarted andthetable-lltogether with the holder member and the wedge willbe reciprocated. below the grinding .wheel33. During this sidewisereciprocation of the wedge'l/V below the wheel 33fthe wedge may be movedlongitudinally withrespect to the wheel by means ofthe, manually operable'con-trol 10 and as the latter movement is accomplished the'inaster' radius 40 by its I engagement with-the rollers 41- .and42ofthe supporting structure of the'motor, moves the motor 12 with thegrinding wheel vertically so that the latter will follow the contour ofthe surface which it-is desired to produce.

Thus when the wedge is adjusted vertically the entire upper surfacethereof is suitably ground by manipulation of the hand wheel Inthisconnection itshould be notedthat the universal joints 30 in theshaft Q land the slip connection l7 of the link 45 permit suf-.

ficientvertical movement for wedges of all normal thickness. it shouldalso be noted that the spline connection of the-shaft 24 with the gear23 is provided in-order to permit movement of'the table 9 longitudinallywith respect to the said shaft, this movement being that accomplished bythe hand wheel 10.

The apparatus of the'present invention affords Very great accuracy and;uniformity with respect tothe curve produced and, at

the sarne time necessitates only a single aidjustment to compensate fordifferences in the I 7 thickness of wedges being -grou n'dtas well asfor weja'r'whichjmay occur on'the grinding On the other; hand, if thewedge first secured in the holder memher. by means of the securingscrews or bolts '36 and the base ortable 6 is adjusted verticalwheel.The full value of'the above features Will be appreciated moreclearlyfrom the following: e

Heretofore in machines of this type, either the piece to be ground orthe grinding wheels. or both were mounted to swing from a fixed pivotpoint. When the grinding wheel of a machine of this type wears, eitherthe radius of the curve produced changes with the result that thearticles produced are not uniform or, some complicated adjustingmechanism must be provided to compensate for the change in radius. Theabove difficulties are overcome by the apparatus of the presentinvention by means ofthe mounting and arrangement of the wedge holdermember and the grinding wheel, the same including provision forreciprocating the wedge longitudinally of the curve to be producedandfor reciprocating the grinding wheel transverse- 1y of the motion ofthe wedge in a path perpendicular to the plane of the wedge. Thisarrangement results in the grinding of uni-.

form curves regardless of the thickness of any particular wedge or theamount of wear which might accumulate on the grindingwheel. I

Thus by our invention we have provided a simple, convenient andefficient apparatus for resurfacing wedges which have become unfit forfurther service on account'of the wearing down of the upper crownsurface.

Furthermore our invention includes a gauge for determining whether ornot used wedges are of thickness 'suificient to. permit reclaiming. r V

Our invention is still further useful'in the manufacture of new wedges.At the present time the contour or crown of the wedge is originallyproduced in the die of a drop forge, when they are made of drop forgedsteel, or in a mold, when they are made of malleable iron castings.Wedges of greatly and in a. plane normal to the general plane of thegrinding-wheel, a move. le mounting for the grinding wheel, a movabletemplate having a curved surface corresponding to s be ground on andmeans carried by a fixed partfor guiding the template in such movement.

means carried by the grinding 2. In a' journal box wedge grinding devicefor grinding a surface of predetermined curvature on the wedge,thecombination of a r grinding wheel, a holder for the wedge, a

movable support for said holder, a movable; mounting for the grindingwheel, and means I g for raising andlowering the wheel to develop)- thecurve, including a movable template hav-i ing an upper surface of acurvature corresponding tothecurvature ofthe surface to, I r be groundon the wedge and having grooves opposed edges of a curvature correspondW in ing to the curvature of'its upper surface, a roller carried by thegrindingwheel mounting riding on the upper curve of the surface 1 of thetemplate,

In testimony whereof we have hereunto signed our names.

STANLEY GRIFFITH BUOKETT. CLYDE CLARENCE DIBBLE.

increased life may be manufactured by employing a drop forge process toproduce a wedge blank which may be chilled or hardened in the crownandthen ground by the apparatus of the present inventionin order toproduce the proper curve on the upper surface thereof. Such wedgeschilled or hard ened in the crown would have substantially longer lifeon account of their increased re= sistance to wear. 7 I

What we claim is p s p r 1. A grinding device having a rotating grindingwheel adapted for grinding predetermined curved surfaces on journal boxwedges, comprising a holder for thewedge,

a movable support for theholder, a'movable table carrying said support,means for reciprocating said supporttransversely ofthe curvature of thesurface to be ground andin a plane parallel to the general plane of thegrinding wheel, means for moving said table a in a directionlongitudinally of saidcurvature d other rollers carried by the grindingwheel mounting .riding in the p "edge grooves.

ALLANLEONARD PRENTIGE. i

